Bob W.

still trying to figure out if I have a throttle body sensor issue...<a href="https://forums.audiworld.com/vag/msgs/14676.phtml">click here for more</a>

VerrÜckt

Log a full 3rd gear pull on a level surface (RPM vs time) and compare it to Scott's data to see if your car is performing.

I think a V8 S4 is capable of reaching 300 g/s.

Edit: You indicate ambient temp was 120*F, are you sure?

Are you talking air intake temps or true ambient?

RI A6

Recently 2 x 140.72 @ 7600 rpm, 77F

In the higher pulls, the intake flap in the airbox opened. In the latest pull, the flap did not open.

Bob W.

there's another marker for Intake Air temp, which is 015. I logged another pull with both of those, and they were very close in value (46-48 deg C).

Bob W.

2 x 153g/s ? are you getting the g/s values from marker 016 (Mass Air Flow ( g/s)? do these values represent half of the actual total for each time stamp?

RI A6

They divide the total by 2, since it is reported on one ECU. Each ECU computes it's fuel delivery based on 1/2 of the actual MAF reading.

RI A6

When I did these I did not log intake temperature.

Bob W.

let's back up a sec...when I generated these logs, I started the vagcom software, clicked OBD-II, then 'mode 1 read data', selected the markers (MAF=16, engine rpm=12, etc), clicked log, then start...did a few WOT runs and clicked 'stop', then done. The log file was generated in the log folder, which is where I obtained the g/s values. what is this 'group 3' you speak of?

RI A6

main screen -&gt; Select Control Module
http://www.ross-tech.com/vag-com/tour/main_screen.html

select control module -&gt; Drivetrain Tab
select control module -&gt; 01 Engine or 11 Engine II
http://www.ross-tech.com/vag-com/tour/scm_screen.html

open controller -&gt; 08 Meas Blocks
http://www.ross-tech.com/vag-com/tour/open_screen.html

Measuring Blocks -&gt; Turbo!
Measuring Blocks -&gt; select Group 3
http://www.ross-tech.com/vag-com/tour/m-blocks.html

If you want to know about everything that you can measure, go to the root directory of the VAG-COM install and read the group label file:

C:\Program Files\VAG-COM\Labels\079-910-560-BNS1.lbl
C:\Program Files\VAG-COM\Labels\079-910-560-BNS2.lbl

Bob W.

so I guess you were talking about 'throttle angle'(in measuring blocks) of 99.6 at WOT, whereas I was talking about 'throttle sensor position' of 85.9 at WOT (in the OBD-II logs)...that might explain the difference. I'll do some logging in the measuring blocks tomorrow and see how they compare...I'd expect yours to be a bit higher since you have hi-flow cats.